Aaeon longstreet



@auch tstt @anni @Hita AARON LONGSTREET, OF CHICA @i051` Letters PatentNo.V 471,315, dated November 26, 1867. i i

IMPROVBD Doon-KNOB.

TO ALL WHOM IT MAY CONCERN: t p t i t n Be it known thatr I, AARON LoNesrnunLof Chicago, in the county of Cookrand State ot' lIllinois, have marked thereon, making a part of this description, in whichinvented an Improved Door-lnob andiAttachment for Locks; and I do hereby declare that; thefollowngis a full, clear,`and exact description of' the same, reference being had to the laccompanying drawingsand letters Figure is a horizontal section ofmy invention taken through the centre of the spindle.; Figure 2, an elevation of the hub which operates the catch. 1-

y The nature of my invention consists in makinglthe shank of th'e inner knob tovpass throughthe rosette, i which `is attached to the rim of the lock,- and with an annular groove, whichis iilledwith suitable metal, projecting outward on the inneii shoulders of' said rosette far enough to hold the` knob firmly in place, `and yetso as to admit of its being turned freely, and in making the shank `of the outer knob in` thelsame manner, and'to'v y `pass through the rosette, and in making a rim on theinside ofthe latter, wherebythe metalivhichholdsthe l shank in position may be kept in place. v t t t By this arrangement, nogfastenings are required oneither knob to hold thespndle in place, thus preventing the possibility o f a. lateralmotonof the knobs, orthe spindle getting loose, unless `the lock or outer` rosetteis forced from `the door, which is seldom thelcase. i ,y v n y A further improvement consists in arranging thcthub, which operates the catch,;to t overl the end `of the shank of the inner knob, by which means said` hub has a step to turn uponpand `isypreventedl fromhaving a` i,

i `lateral motion when acted upon by the spindle.

In order `to give a correct understanding vof my invention, I have marked corres letters, and will now give la detailed description.`

n A represeutsthe inner or face knob, and B` tllctouter knob, whiehzmay be madefof any` material'non clon-1` sidered suitable for such a purpose. Knob A has ja nicelyfitting shank, I`lextending through the rosettefll) `attached to `lock C,`said shank' having near its inner end` an annular groove; m, inwhich iskputany sutab metal, G, which will hold shank I in place and `cause the shoulders of said shank to benragainst `the endzof rosetteD, al countersink, n, being made n rosette `D toprevent the metal lfrom gettingout of,` place. i p Knob B` t has a similar shank to that shown at`I, and is secucdin the same manner, a rim,wo, being used toholdthe met in place. `A loose spindle, J, is made to pass through the door, shown by red linesW, )and suchlength-a 1 vvill pass `through shanks'H I. ,This Aspindle J maybe fastened` permanentlyto knob' B, "an answer the sam i purpose, but it is `not necessary, unless the spindle is to be out 'throughat the red` line X,3inY order to givean` ,i independent motion to the knobs. The hub E (gs. I1 and 2) has a recess made jin its`end,\as;seen atltig."` d y used totit over the shank I, and thus be held `in place independently of the spindleJ.` This arrangem important for holding said hub in position in operating'catch K. i 1 n t t The method of putting the lock C on the door, `when my knobs are used, is very simple,`ije`quiring only th said lock be secured in the usual manner, and the rosette E fastened to door W by means `of screws Z Z@` l Having thus fully described my device, what I claim, and 'desire to secure by `LettersiPatent, is-v-` 1. `'.lhe knobs A B, having shoulders S S fitted to operate against the outer ends of rosettes D E, and having shanksH I passing through said rosettes, and secured by the metal G G, putiul theannula'i grooves fnt rn, sul) etantially as and for the purpose set forth.

attached to a door as herein specified.

2. The kfnobs A B, having Shanks H I, in combination with the loose spindle J,rbsettcsiD` arranged y SThe hub F, having a recess, P, in combination with spindle 5I, knobs mand catch K, asjhelljeiu describeihl i AARON Lonefs'rnnnr;``

Witnesses: Y p

A. BJ IULLMAN,` Gno. L; CHAPIN, t A, HAYNALD. 

